$Dow(DOW.US) checked out the analysis by this buddy 'Kungao', this guy is really excellent, truly admirable. Looked it up and found that Buffett also bought Dow, but it was preferred stock. Personally, I'm still learning and observing. If you get trapped in this kind of commodity, it might take two or three years. If you really want to go all in, waiting another day or two won't make a difference. Thirty-five dollars might indeed be entering the bottom range. At thirty dollars, as long as you judge the company won't go under, you should probably consider going all in.